/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.rsqldb.parser.parser.sqlnode;

import com.alibaba.rsqldb.parser.parser.builder.AbstractSQLBuilder;
import com.alibaba.rsqldb.parser.parser.builder.LateralTableBuilder;
import com.alibaba.rsqldb.parser.parser.builder.SelectSQLBuilder;
import com.alibaba.rsqldb.parser.parser.result.IParseResult;
import org.apache.calcite.sql.SqlBasicCall;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class LateralTableParser extends AbstractSqlNodeParser<SqlBasicCall, AbstractSQLBuilder> {

    private static final Log LOG = LogFactory.getLog(SelectSQLBuilder.class);

    @Override
    public IParseResult parse(AbstractSQLBuilder builder, SqlBasicCall sqlNode) {
        SqlBasicCall tableNode = (SqlBasicCall)sqlNode.getOperands()[0];
        IParseResult valueResult = parseSqlNode(builder, tableNode.operand(0));
        return valueResult;
    }

    @Override
    public boolean support(Object sqlNode) {
        if (sqlNode instanceof SqlBasicCall) {
            SqlBasicCall sqlBasicCall = (SqlBasicCall)sqlNode;
            if (sqlBasicCall.getOperator().getName().toLowerCase().equals("lateral")) {
                return true;
            }
        }
        return false;
    }

    @Override
    public AbstractSQLBuilder create() {
        return new LateralTableBuilder();
    }
}
